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Will be driving and the sound stops and I wont be able to make any changes to inputs or volume. Have to turn the car off and turn it back on for it to work. Took it to Mercedes and they said they couldnt replicate it and they can update the software with out it throwing a code. I confirmed that there is a software update available but the only way for them to cover it under warranty is for there to be a code.

Any tips for me to figure out this issue or update the software myself?
 
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